Bearing.



4 O 9 1 2 mm B D D E T N E T A P G. ENGEL.

BEARING.

APPLICATION FILED 110x525, 190a.

WITNESSES:

NTTED STATES Patented December 27, 1904.

PATENT rricn.

BEARING.

SPECII ICATZON forming part of Letters Patent No 778,822, dated December27, 1904.

Original application filed September 1, 1900, $erial No. 28,852. Dividedand this application filed November 25, 1903. Serial No. 182,566.

To (LU whom, (It may concern:

Be it known that I, GODFREY ENGEL, a citizen of theUnited States,residing in the city of Baltimore and State of Maryland, have inventedcertain new and useful Improvements in Bearings; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in bearings of centrifugalmachines; and it consists in a novel construction of the head and footor step bearings of such machines and the parts associated therewith,whereby the lubrication of such bearings is facilitated.

The object of my invention is to improve the lubrication of the bearingsof centrifugal machines.

I will now proceed to describe my invention with reference to theaccompanying drawing, in which is shown an elevation of a centrifugalmachine embodying my invention, the upper and lower bearings thereofbeing sectioned, and will then point out the novel features in claims.

The machine shown in the said drawing is of the suspension type, beingsuspended from I-beams 1 1 by means of a suspension-socket 2, whichreceives the spherically-curved head 3 of the suspension-bracket 4 ofthe machine. From this bracket 4 the curb 5 is suspended by rods 6. Thecurb is provided with spiderarms 7, which support the step-bearing ofthe machine, and therefore the revolving basketshaft 8, upon which thebasket is mounted, said basket being concealed in the drawing by thecurb 5. The bracket 4, curb 5, rods 6, and spider-arms '7 constitute aframe for supporting the basket-shaft.

Upon the shaft 8 is a belt-pulley 9, by which said shaft may be driven.As centrifugal machines have usually been constructed in the past therevolving shaft of the machine has been journaled at both ends inbearings which surround the shaft. This construction is objectionable,because the wear upon that bearing which is in proximity to thebelt-pulley is greater in one direction than in the other,

owing to the tension of the belt. Such uneven wear of the bearing is afruitful source of trouble. In this machine such wear is avoided byforming the upper bearing, which is closest to the belt-pulley, in theshaft itself, the journal being a pivot-pin carried by thesuspension-bracket l. 10 designates this pin. Its lower or journalportion is slightly tapered and fits within the recess 11 in the upperportion of the shaft 8. The upper portion of this recess is ofsufficient diameter to receive a bearingbushing 12, of antifrictionmetal. The lower portion of the recess 11 forms an oil-reservoir, and inthe shaft there isa drainage opening normally closed by a screw plug 13.

An oil-cup 14: is mounted upon the upper end of the shaft 8 andsurrounds such upper end. An oil-passage 15 extends through the shaft 8and bushing 12 and serves to transfer oil from the cup 14 to the surfaceof the journal-pin. When the machine is in operation, centrifugal forcethrows the oil from the recess 11 between the wearing-surfaces into thecup 14, which is of suflicient size to hold all oil so thrown up. rest,the oil drains back from the cup 14: into the recess 11. Thewearing-surfaces are thus kept thoroughly lubricated.

The construction of the step-bearing of the machine is as follows: Thespider 7 carries a bearing-cup 16, adjustable in height by means ofstuds 17, only one of which is seen in the drawing. Within said cup is abearing-bushing 18, forming a bearing for the lower end of the shaft 8.Between said bushing 18 and the cup 16 there is an oil-chamber 19, and

perforations in the bushing serve to lead the oil from said chamber tothe journal. The cup 16 is extended above the bushing 18 to form anoil-cup 20, which cup is connected to the oil-chamber 19 by oil-holes21, and the chamber 19 is connected by similar holes 22 with the lowerportion of the cup 16. An oilpipe 23, connected to the cup 16, serves tosupply oil thereto. This pipe is provided at its upper end with a plug,by which it is closed normally. The cup 16 contains and supports abearing-block 24, within which are a num- IVhen the machine comes to berof bearing-buttons 25 25, and in the lower end of the shaft 6 is aremovable step-piece 26. The construction of this portion of thestepbearing is that which is customary in centrifugal machines.Adjustment of the bearings is obtained by means of the studs 17 andalso, if desired, by means of the nuts which hold the journal-spindle 10in place.

In another application for Letters Patent, filed September 1, 1900,Serial No. 28,852, of which this is a division, I have claimed a bearingfor centrifugal machines comprising a stationary journal-pin locatedwithin a socket at one end of the shaft of the machine and taperingtoward the other end thereof, also a suspension-framework carryingguidecand supporting bearings for the lower end of the shaft inconnection with a downwardly-tapering journal-pin fitting into abearing-recess in the upper end of the shaft. Therefore such inventionsare not claimed herein.

What I claim is 1. The combination with the frame of the machine havinga bearing for a shaft, of a revolving shaft for carrying the basket,revolubly mounted at its lower end in said bearing, and having at itsupper end a bearing-recess andoil-reservoir,adownwardly-taperingjournal-pin fitting into suchbearing-recess, an oilcup surrounding the upper portion of the shaft,there being an oil-passage connecting the cup with said bearing-recess.

2. The combination with a support for the lower end of the basket-shaft,of a bearing-cup carried by such support, an oil-supply pipe connectedwith such cup, a step-beari ng for the shaft within said cup, and abearing-bushing likewise within said cup, supported thereby, andsurrounding a journal on said shaft, said cup and bushing having betweenthem an oilreservoir communicating with the oil-space in the lowerportion of the cup and the bearingbl shing having perforations extendingfrom such oil-reservoir to the wearing-surface.

3. The combination with a support for the lower end of thebasketshaft,of a bearing-cu p, carried by such support, an oil-supplypipe, connected with such cup, a step-bearing for the shaft within saidcup, and a bearing-bushing likewise within said cup, supported thereby,and surrounding a journal on said shaft, said cup and bushing havingbetween them an oilreservoir communicating with the oil-space in thelower portion of the cup, said bearingbushing having perforationsextending from such oil-reservoir to the wearing-surfaces, andthe-bearing-cup having an oil-cup, above the bearing-bushing, adapted tocontain oil forced upward by centrifugal force, and communieating withthe oil-space below.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

GODFREY ENGEL.

Witnesses:

HOWARD D. ADAMS, 0. JOHN BEERNKES.

